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- handle: 10670/1.cvi9i8
- Hamzaoui, Chérif et Xing, Zhi-zhong (1995). « A simplified approach to determine α and the penguin amplitude in Bd → pipi ». Physics Letters B, 360(1-2), pp. 131-137.
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http://dx.doi.org/10.1016/0370-2693(95)01112-4
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doi:10.1016/0370-2693(95)01112-4
Mots-clés
Penguin amplitudeSujets proches
Spin, Isobaric Isospin Isotopic spinCiter ce document
Chérif Hamzaoui et al., « A simplified approach to determine α and the penguin amplitude in Bd → pipi », UQAM Archipel : articles scientifiques, ID : 10670/1.cvi9i8
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The effect of inelastic final-state interactions (IFSI's) on the determination of the weak phase α from the isospin triangles of B→ππ is qualitatively illustrated. Neglecting the electroweak penguins and IFSI's and assuming the dominance of the top-quark loop in strong penguin diagrams, we propose an experimentally accessible way to approximately determine α and the penguin amplitude in Bd→ππ. This approach relies on a simplified isospin consideration and the factorization approximation, and its feasibility is irrelevant to the time-dependent measurements of Bd→ππ.